CA2936040A1 - Fluidically actuatable fail-safe disk brake system and lifting device comprising said system - Google Patents
Fluidically actuatable fail-safe disk brake system and lifting device comprising said system Download PDFInfo
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- CA2936040A1 CA2936040A1 CA2936040A CA2936040A CA2936040A1 CA 2936040 A1 CA2936040 A1 CA 2936040A1 CA 2936040 A CA2936040 A CA 2936040A CA 2936040 A CA2936040 A CA 2936040A CA 2936040 A1 CA2936040 A1 CA 2936040A1
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- Prior art keywords
- brake
- brake cylinder
- disk
- fluid
- valves
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/22—Brakes applied by springs or weights and released hydraulically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/025—Electrically controlled valves
- B60T15/028—Electrically controlled valves in hydraulic systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
- F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Braking Arrangements (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Disclosed is a brake system having a plurality of brake cylinder pairs. A
first fluid connection and a second fluid connection are provided on each of the brake cylinders, configured to supply a fluid to the brake cylinder so that a force is applied to a brake piston. A
2/2-way valve is assigned to the first or second fluid connection of a first brake cylinder and a 2/2-way valve is assigned to the first or second fluid connection of a second brake cylinder. If the first fluid connection of the first brake cylinder is assigned to the 2/2-way valve, the second fluid connection is fluidically connected to the first fluid connection of the second brake cylinder, and if the second fluid connection of the first brake cylinder is assigned to the 2/2-way valve, the first fluid connection is fluidically connected to the second fluid connection of the second brake cylinder.
first fluid connection and a second fluid connection are provided on each of the brake cylinders, configured to supply a fluid to the brake cylinder so that a force is applied to a brake piston. A
2/2-way valve is assigned to the first or second fluid connection of a first brake cylinder and a 2/2-way valve is assigned to the first or second fluid connection of a second brake cylinder. If the first fluid connection of the first brake cylinder is assigned to the 2/2-way valve, the second fluid connection is fluidically connected to the first fluid connection of the second brake cylinder, and if the second fluid connection of the first brake cylinder is assigned to the 2/2-way valve, the first fluid connection is fluidically connected to the second fluid connection of the second brake cylinder.
Description
Fluidically Actuatable Fail-Safe Disk Brake System and Lifting Device Comprising Said System The invention relates to a fluidically actuatable disk brake system, in particular for a lifting device, having a plurality of brake cylinder pairs, each having brake cylinders arranged on both sides of a brake disk in one or more brake calipers, wherein each brake cylinder comprises a brake piston, to which a spring force directed toward the brake disk is applied by means of a spring arrangement, a first fluid connection and a second fluid connection being provided on each brake cylinder, through which a fluid can be supplied to the brake cylinder, enabling a force directed against the spring force to be applied to the brake piston to reduce the braking force induced by the spring force.
The term "fluidically" is understood in particular to mean hydraulically or pneumatically. The term "fluid" accordingly is understood to refer in particular to hydraulic fluid or compressed air.
Such a disk brake system is referred to as "fail safe" because, in the worst case, what is to be expected in the event of a defect is a decline in the fluid pressure applied to the brake cylinders.
This leads to brake activation and thus prevents uncontrolled states of movement. This is known from DE 10 2007 041 411 B3, DE 10 2006 003 832 Al, DE 36 04 451 Al and DE 32 04 695 Al, for example.
A lifting device having such a disk brake system is known from WO 03/072904 Al, for example.
This lifting device serves to increase and decrease a load, in particular with drilling equipment or a pipe plugging closing device, for example, from a floating platform on the bottom of the ocean or in or on a borehole. It has a rotatably mounted winding drum, which is attached to a flexible traction device, usually made of steel cable that can be wound up and unwound by a rotational drive of the winding drum. The winding drum is connected to a brake disk of the disk brake system. The rotational speed of the winding drum can be decreased or even blocked completely during the unwinding operation with the help of the brake cylinder pairs that are provided with a plurality of brake calipers.
To be able to influence the braking force, the pressure applied to each brake cylinder must be adjusted in the same way, to which end, in the simplest case, the first and second fluid connections of all brake cylinders must merely be connected in parallel with the same fluid pressure source.
However, safety regulations require that, for testing purposes, the brake cylinder pairs must be activatable or deactivatable either individually or jointly in various combinations. To do so, with the known disk brake system, the first fluid connections of the two brake cylinders of a brake cylinder pair must be connected to a first pressure line, while the two second fluid connections must be connected to a second pressure line. Each pressure line comprises a separate 2/2-way valve, which can be operated electromagnetically against a spring force. The
The term "fluidically" is understood in particular to mean hydraulically or pneumatically. The term "fluid" accordingly is understood to refer in particular to hydraulic fluid or compressed air.
Such a disk brake system is referred to as "fail safe" because, in the worst case, what is to be expected in the event of a defect is a decline in the fluid pressure applied to the brake cylinders.
This leads to brake activation and thus prevents uncontrolled states of movement. This is known from DE 10 2007 041 411 B3, DE 10 2006 003 832 Al, DE 36 04 451 Al and DE 32 04 695 Al, for example.
A lifting device having such a disk brake system is known from WO 03/072904 Al, for example.
This lifting device serves to increase and decrease a load, in particular with drilling equipment or a pipe plugging closing device, for example, from a floating platform on the bottom of the ocean or in or on a borehole. It has a rotatably mounted winding drum, which is attached to a flexible traction device, usually made of steel cable that can be wound up and unwound by a rotational drive of the winding drum. The winding drum is connected to a brake disk of the disk brake system. The rotational speed of the winding drum can be decreased or even blocked completely during the unwinding operation with the help of the brake cylinder pairs that are provided with a plurality of brake calipers.
To be able to influence the braking force, the pressure applied to each brake cylinder must be adjusted in the same way, to which end, in the simplest case, the first and second fluid connections of all brake cylinders must merely be connected in parallel with the same fluid pressure source.
However, safety regulations require that, for testing purposes, the brake cylinder pairs must be activatable or deactivatable either individually or jointly in various combinations. To do so, with the known disk brake system, the first fluid connections of the two brake cylinders of a brake cylinder pair must be connected to a first pressure line, while the two second fluid connections must be connected to a second pressure line. Each pressure line comprises a separate 2/2-way valve, which can be operated electromagnetically against a spring force. The
2/2-way valve is designed so that it is also currentless in the forward-voltage position under the influence of the spring force.
First, one disadvantage with such a disk brake system is the installation cost associated with the individual 2/2-way valves. In addition, it is a disadvantage that the operational reliability is influenced in a negative sense by any leakage which may occur in the fluid lines between the 2/2-way valves and the brake cylinders.
Therefore, the object of the invention is to create a disk brake system that is improved with respect to these disadvantages.
=
This object is achieved by the disk brake system defined in claim 1.
With the disk brake system according to the invention, a 2/2-way valve is assigned to each one of the first or second fluid connections of the brake cylinder of the brake cylinder pair, and the other one of the first or second fluid connections of the brake cylinder of the brake cylinder pair is connected to the others fluidically. In other words, the brake cylinders of a brake cylinder pair are connected in series fluidically, wherein a 2/2-way valve is inserted into each one of the inlet lines to the fluid pressure source.
Based on this measure, it is possible to design the 2/2-way valves as cartridge valves, also known as "screw-in valves," arranged in or on the brake caliper. Each brake caliper therefore requires only one single cartridge valve per brake cylinder, based on the series connection of the brake , cylinders, in order to separate the brake cylinder pair optionally from the fluid source or connect it to the fluid source, whereas four cartridge valves would be required in the case of the fluidic parallel connection of the brake cylinders of a brake cylinder pair, namely one cartridge valve on each fluid connection of the brake cylinders.
The brake system according to the invention is therefore characterized by a reduced installation complexity. The risk of leakage can be reduced by the option of designing the brake system as cartridge valves. The installation space required by the disk brake system is also reduced by the use of cartridge valves.
If the 2/2-way valves are designed as motor-operated valves that can be brought into the closed position against the spring force, then these must be acted upon by electric power only for test purposes, so that the power consumption is reduced to the normal range and operating reliability is increased.
To be able to detect the efficacy of individual groups of brake cylinder pairs or several different groups of brake cylinder pairs, it is provided in a preferred embodiment of the brake system according to the invention that the 2/2-way valves of one brake cylinder pair are to be designed independently of the 2/2-way valves of the other brake cylinder pairs or optionally together with one or more of the other brake cylinder pairs.
The brake system according to the invention is provided for a lifting device of the type described in the introduction in particular. The invention therefore also relates to a lifting device equipped with such a brake system.
The invention will be illustrated in greater detail below on the basis of the drawings, in which:
First, one disadvantage with such a disk brake system is the installation cost associated with the individual 2/2-way valves. In addition, it is a disadvantage that the operational reliability is influenced in a negative sense by any leakage which may occur in the fluid lines between the 2/2-way valves and the brake cylinders.
Therefore, the object of the invention is to create a disk brake system that is improved with respect to these disadvantages.
=
This object is achieved by the disk brake system defined in claim 1.
With the disk brake system according to the invention, a 2/2-way valve is assigned to each one of the first or second fluid connections of the brake cylinder of the brake cylinder pair, and the other one of the first or second fluid connections of the brake cylinder of the brake cylinder pair is connected to the others fluidically. In other words, the brake cylinders of a brake cylinder pair are connected in series fluidically, wherein a 2/2-way valve is inserted into each one of the inlet lines to the fluid pressure source.
Based on this measure, it is possible to design the 2/2-way valves as cartridge valves, also known as "screw-in valves," arranged in or on the brake caliper. Each brake caliper therefore requires only one single cartridge valve per brake cylinder, based on the series connection of the brake , cylinders, in order to separate the brake cylinder pair optionally from the fluid source or connect it to the fluid source, whereas four cartridge valves would be required in the case of the fluidic parallel connection of the brake cylinders of a brake cylinder pair, namely one cartridge valve on each fluid connection of the brake cylinders.
The brake system according to the invention is therefore characterized by a reduced installation complexity. The risk of leakage can be reduced by the option of designing the brake system as cartridge valves. The installation space required by the disk brake system is also reduced by the use of cartridge valves.
If the 2/2-way valves are designed as motor-operated valves that can be brought into the closed position against the spring force, then these must be acted upon by electric power only for test purposes, so that the power consumption is reduced to the normal range and operating reliability is increased.
To be able to detect the efficacy of individual groups of brake cylinder pairs or several different groups of brake cylinder pairs, it is provided in a preferred embodiment of the brake system according to the invention that the 2/2-way valves of one brake cylinder pair are to be designed independently of the 2/2-way valves of the other brake cylinder pairs or optionally together with one or more of the other brake cylinder pairs.
The brake system according to the invention is provided for a lifting device of the type described in the introduction in particular. The invention therefore also relates to a lifting device equipped with such a brake system.
The invention will be illustrated in greater detail below on the basis of the drawings, in which:
3 Figure 1 shows a schematic diagram of the hydraulics of an exemplary embodiment of a disk brake system belonging to the state of the art;
Figure 2 shows a schematic diagram of the hydraulics of an exemplary embodiment of the disk brake system according to the invention; and Figure 3 shows an exemplary embodiment of a lifting device, for which the disk brake system according to the invention is provided, for example.
The exemplary embodiment of a disk brake system 100 belonging to the state of the art, as illustrated in Figure 1, comprises a brake disk 1 as well as five brake cylinder pairs 2, having brake cylinders 3, 4 arranged opposite one another on both sides of a brake disk.
Each brake cylinder 3, 4 consists of a single-acting brake piston 5, 6.
A spring arrangement 7, 8 acts on each brake piston 5, 6 and exerts a spring force on the brake piston, directed toward the brake disk 1.
Each brake piston 5, 6 acts on a brake liner 9, 10, which is pressed against the brake disk 1 under spring force, thereby inducing the braking effect.
To reduce the braking effect, each brake cylinder 3, 4 has a first fluid connection P1 and a second fluid connection P2. Each fluid connection P1, P2 is connected to a pressure line 11, 12, so that a fluid pressure, for example, hydraulic pressure, which is supplied via the pressure lines 11, 12, is applied to the brake piston 5, 6, and a force is exerted on the respective brake piston 5, 6 and thus on the respective brake lining 9, 10 by means of the respective spring arrangement 7, 8.
To enable an exchange of air between the chambers 13, 14 (enclosing the spring arrangements 7, 8) of the brake cylinders 3,4 and the surroundings, each chamber 13, 14 has a connection Al for venting and aerating. In addition, a connection R1, which serves to remove any leakage fluid that might have passed through the respective brake piston 5, 6, is provided on each chamber
Figure 2 shows a schematic diagram of the hydraulics of an exemplary embodiment of the disk brake system according to the invention; and Figure 3 shows an exemplary embodiment of a lifting device, for which the disk brake system according to the invention is provided, for example.
The exemplary embodiment of a disk brake system 100 belonging to the state of the art, as illustrated in Figure 1, comprises a brake disk 1 as well as five brake cylinder pairs 2, having brake cylinders 3, 4 arranged opposite one another on both sides of a brake disk.
Each brake cylinder 3, 4 consists of a single-acting brake piston 5, 6.
A spring arrangement 7, 8 acts on each brake piston 5, 6 and exerts a spring force on the brake piston, directed toward the brake disk 1.
Each brake piston 5, 6 acts on a brake liner 9, 10, which is pressed against the brake disk 1 under spring force, thereby inducing the braking effect.
To reduce the braking effect, each brake cylinder 3, 4 has a first fluid connection P1 and a second fluid connection P2. Each fluid connection P1, P2 is connected to a pressure line 11, 12, so that a fluid pressure, for example, hydraulic pressure, which is supplied via the pressure lines 11, 12, is applied to the brake piston 5, 6, and a force is exerted on the respective brake piston 5, 6 and thus on the respective brake lining 9, 10 by means of the respective spring arrangement 7, 8.
To enable an exchange of air between the chambers 13, 14 (enclosing the spring arrangements 7, 8) of the brake cylinders 3,4 and the surroundings, each chamber 13, 14 has a connection Al for venting and aerating. In addition, a connection R1, which serves to remove any leakage fluid that might have passed through the respective brake piston 5, 6, is provided on each chamber
4 13, 14. In the exemplary embodiment shown here, the connections Al, R1 are connected to a line system 15.
Vent valves 16, which serve to release air after the operation of filling with hydraulic fluid in the event of hydraulic operation, are activated in the pressure lines 11, 12 on the two outer brake cylinder pairs.
In order for each of the brake cylinder pairs 2 to be optionally subject to the fluid pressure supplied through the pressure lines 11, 12, separately from one another or to be separable from the pressure lines for testing purposes, a 2/2-way valve 17, 18 is connected to each of the pressure lines 11, 12 for each of the brake cylinder pairs 2. The 2/2-way valve is designed to be electromagnetically operable against the action of a spring force in such a way that it is switched to the open position in the currentless state. To uncouple a brake cylinder pair 2 from the pressure lines 11, 12, the respective 2/2-way valves 17, 18 must be activated by an electric current, so that the brake cylinder pair 2 can be held under the fluid pressure prevailing at the point in time of operation of the 2/2-way valves 17, 18, independently of a subsequent change in pressure applied to the pressure lines 11, 12.
In order for any leakage fluid not to escape uncontrollably from the 2/2-way valves 17, 18, each of the valves is connected to a leakage line 19.
The exemplary embodiment of the brake system according to the invention illustrated in Figure 2 differs from the brake system which is illustrated in Figure 1 and to whose description above reference is herewith made, unless described otherwise below. The difference consists of the fact that the first fluid connection P1 of one of the brake cylinders of the brake cylinder pairs 2, i.e., the brake cylinder 4 here, is connected to the pressure line 12, whereas the second fluid connection P2 is connected to the first fluid connection P1 of the other brake cylinder of this brake cylinder pair, i.e., the brake cylinder 3 here, and a second fluid connection P2 of this brake cylinder 3 is connected to the pressure line 11. Due to this fluidic series connection, the same functionality can be achieved as with the exemplary embodiment according to the state of the art, but in this case only two 2/2-way valves designed as cartridge valves are necessary to achieve this functionality, wherein the one cartridge valve 20 is provided for optional isolation of the first fluid connection P1 from the pressure line 12 on the brake cylinder 4, whereas the second cartridge valve 21 is provided for optional separation of a second fluid connection P2 of the brake cylinder 3 from the pressure line 11 on the brake cylinder 3. The cartridge valves 20, 21 are designed functionally in accordance with the 2/2-way valves 17, 18.
As in the embodiment 100 according to the state of the art, the embodiment of the disk brake system 200 according to the invention, as illustrated in Figure 2, has vent valves 16 as well as a ventilation system 15, but the connections R1 for removing leakage fluid are connected to this ventilation system in the exemplary embodiment shown here.
A disk brake system 200 according to the invention is provided in particular for use in a lifting device, which may be designed as shown in Figure 3, for example.
The components of the lifting device are mounted on a frame 22. For increasing and decreasing as well as maintaining a load, in particular for a drawing machine or the like, a drum 23, which is mounted on a drum shaft 24, so that it is rotationally fixed and whose axis S
runs parallel to the longitudinal sides 25 of the frame 22, is provided. It is mounted in bearing blocks 26, 27, which are arranged on the far side of the two end sides 28, 29 of the drum 23.
In the region of the drum shaft 24 shown at the right of the drum 23 in Figure 1, the brake disk 1, which is part of the disk brake system 200, is arranged in a rotationally fixed manner. The brake cylinder pairs 2 of this disk brake system are arranged in several brake calipers 30 in the exemplary embodiment illustrated in Figure 3, only two of these brake calipers being visible in Figure 3.
In addition, an eddy current brake 31, which is also connected to the drum shaft 24, is provided to support the disk brake system 200 in decelerating an unwinding operation.
On the left of the drum 23 according to Figure 1, a drive unit 32 is provided, comprising electrically driven drive motors 33 and gear units 34 as well as a pick-off gear 35 in the case of the exemplary ..
embodiment not shown here.
List of Reference Numerals 100, 200 Disk brake system 1 Brake disk 2 Brake cylinder pairs 3 Brake cylinder 4 Brake cylinder Brake piston 6 Brake piston 7 Spring arrangement 8 Spring arrangement 9 Brake lining Brake lining P1 First fluid connection P2 Second fluid connection 11 Pressure line 12 Pressure line 13 Chamber 14 Chamber Al Connection R1 Connection Line system 16 Ventilation valves 17 2/2-way valve 18 2/2-way valve 19 Leakage line Cartridge valve 21 Cartridge valve 22 Frame 23 Drum 24 Drum shaft S Axis 25 Longitudinal sides 26 Bearing block , 27 Bearing block 28 End face 29 End face 30 Brake calipers 31 Eddy current brake 32 Drive unit 33 Drive motors 34 Gear units 35 Pick-off gear
Vent valves 16, which serve to release air after the operation of filling with hydraulic fluid in the event of hydraulic operation, are activated in the pressure lines 11, 12 on the two outer brake cylinder pairs.
In order for each of the brake cylinder pairs 2 to be optionally subject to the fluid pressure supplied through the pressure lines 11, 12, separately from one another or to be separable from the pressure lines for testing purposes, a 2/2-way valve 17, 18 is connected to each of the pressure lines 11, 12 for each of the brake cylinder pairs 2. The 2/2-way valve is designed to be electromagnetically operable against the action of a spring force in such a way that it is switched to the open position in the currentless state. To uncouple a brake cylinder pair 2 from the pressure lines 11, 12, the respective 2/2-way valves 17, 18 must be activated by an electric current, so that the brake cylinder pair 2 can be held under the fluid pressure prevailing at the point in time of operation of the 2/2-way valves 17, 18, independently of a subsequent change in pressure applied to the pressure lines 11, 12.
In order for any leakage fluid not to escape uncontrollably from the 2/2-way valves 17, 18, each of the valves is connected to a leakage line 19.
The exemplary embodiment of the brake system according to the invention illustrated in Figure 2 differs from the brake system which is illustrated in Figure 1 and to whose description above reference is herewith made, unless described otherwise below. The difference consists of the fact that the first fluid connection P1 of one of the brake cylinders of the brake cylinder pairs 2, i.e., the brake cylinder 4 here, is connected to the pressure line 12, whereas the second fluid connection P2 is connected to the first fluid connection P1 of the other brake cylinder of this brake cylinder pair, i.e., the brake cylinder 3 here, and a second fluid connection P2 of this brake cylinder 3 is connected to the pressure line 11. Due to this fluidic series connection, the same functionality can be achieved as with the exemplary embodiment according to the state of the art, but in this case only two 2/2-way valves designed as cartridge valves are necessary to achieve this functionality, wherein the one cartridge valve 20 is provided for optional isolation of the first fluid connection P1 from the pressure line 12 on the brake cylinder 4, whereas the second cartridge valve 21 is provided for optional separation of a second fluid connection P2 of the brake cylinder 3 from the pressure line 11 on the brake cylinder 3. The cartridge valves 20, 21 are designed functionally in accordance with the 2/2-way valves 17, 18.
As in the embodiment 100 according to the state of the art, the embodiment of the disk brake system 200 according to the invention, as illustrated in Figure 2, has vent valves 16 as well as a ventilation system 15, but the connections R1 for removing leakage fluid are connected to this ventilation system in the exemplary embodiment shown here.
A disk brake system 200 according to the invention is provided in particular for use in a lifting device, which may be designed as shown in Figure 3, for example.
The components of the lifting device are mounted on a frame 22. For increasing and decreasing as well as maintaining a load, in particular for a drawing machine or the like, a drum 23, which is mounted on a drum shaft 24, so that it is rotationally fixed and whose axis S
runs parallel to the longitudinal sides 25 of the frame 22, is provided. It is mounted in bearing blocks 26, 27, which are arranged on the far side of the two end sides 28, 29 of the drum 23.
In the region of the drum shaft 24 shown at the right of the drum 23 in Figure 1, the brake disk 1, which is part of the disk brake system 200, is arranged in a rotationally fixed manner. The brake cylinder pairs 2 of this disk brake system are arranged in several brake calipers 30 in the exemplary embodiment illustrated in Figure 3, only two of these brake calipers being visible in Figure 3.
In addition, an eddy current brake 31, which is also connected to the drum shaft 24, is provided to support the disk brake system 200 in decelerating an unwinding operation.
On the left of the drum 23 according to Figure 1, a drive unit 32 is provided, comprising electrically driven drive motors 33 and gear units 34 as well as a pick-off gear 35 in the case of the exemplary ..
embodiment not shown here.
List of Reference Numerals 100, 200 Disk brake system 1 Brake disk 2 Brake cylinder pairs 3 Brake cylinder 4 Brake cylinder Brake piston 6 Brake piston 7 Spring arrangement 8 Spring arrangement 9 Brake lining Brake lining P1 First fluid connection P2 Second fluid connection 11 Pressure line 12 Pressure line 13 Chamber 14 Chamber Al Connection R1 Connection Line system 16 Ventilation valves 17 2/2-way valve 18 2/2-way valve 19 Leakage line Cartridge valve 21 Cartridge valve 22 Frame 23 Drum 24 Drum shaft S Axis 25 Longitudinal sides 26 Bearing block , 27 Bearing block 28 End face 29 End face 30 Brake calipers 31 Eddy current brake 32 Drive unit 33 Drive motors 34 Gear units 35 Pick-off gear
Claims (6)
1. A fluidically actuatable disk brake system (200) having a plurality of brake cylinder pairs (2), which have brake cylinders (3, 4) arranged on both sides of a brake disk (1) in one or more brake calipers (30), wherein each brake cylinder (3, 4) comprises a brake piston (5, 6) to which a spring force directed toward the brake disk (1) is applied by means of a spring arrangement (7, 8), wherein a first fluid connection and a second fluid connection (P1, P2) are provided on each brake cylinder (3, 4), by means of which fluid can be supplied to the brake cylinder (4, 5) with which a force counteracting the spring force can be applied to the brake piston (5, 6) to reduce the braking force that can be exerted by the spring force, characterized in that a 2/2-way valve (20, 21) is assigned to each one of the first or second fluid connections (P1, P2) of the brake cylinders (4, 5) of the brake cylinder pair (2), and the other one of the first or second fluid connections (P1, P2) of the brake cylinder (3, 4) of the brake cylinder pair (2) is fluidically connected to the other.
2. The disk brake system according to claim 1, characterized in that the 2/2-way valves are designed as cartridge valves arranged in or on the brake caliper (30).
3. The disk brake system according to claim 1 or 2, characterized in that the 2/2-way valves are designed as motor operable valves that can be brought into the closed position against a spring force.
4. The disk brake system according to claim 3, characterized in that the 2/2-way valves are designed to be electromagnetically operable.
5. The disk brake system according to claim 3 or 4, characterized in that the 2/2-way valves of a brake cylinder pair are designed as two valves that can be operated independently of the 2/2-way valves of the other brake cylinder pairs or optionally together with one or more of the other brake cylinder pairs.
6. A lifting device having a brake system according to any one of claims 1 to 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014101128.7 | 2014-01-30 | ||
| DE102014101128.7A DE102014101128B3 (en) | 2014-01-30 | 2014-01-30 | Fluidic actuated, fail-safe disc brake system and lift with this system |
| PCT/EP2015/050868 WO2015113847A1 (en) | 2014-01-30 | 2015-01-19 | Fluidically actuatable failsafe disk brake system and lifting device comprising said system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2936040A1 true CA2936040A1 (en) | 2015-08-06 |
| CA2936040C CA2936040C (en) | 2022-02-22 |
Family
ID=52391950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2936040A Active CA2936040C (en) | 2014-01-30 | 2015-01-19 | Fluidically actuatable fail-safe disk brake system and lifting device comprising said system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9751735B2 (en) |
| EP (1) | EP3099623B1 (en) |
| CN (1) | CN105939957B (en) |
| CA (1) | CA2936040C (en) |
| DE (1) | DE102014101128B3 (en) |
| NO (1) | NO2760517T3 (en) |
| WO (1) | WO2015113847A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10464791B2 (en) * | 2017-03-06 | 2019-11-05 | Cameron International Corporation | Drawworks systems and methods |
| US10508715B2 (en) | 2017-03-06 | 2019-12-17 | Cameron International Corporation | Motor assembly for drawworks systems and methods |
| WO2019118352A1 (en) | 2017-12-11 | 2019-06-20 | Schlumberger Technology Corporation | Air cooled variable-frequency drive |
| US10697254B2 (en) | 2018-04-10 | 2020-06-30 | Cameron International Corporation | Drawworks system with variable frequency drive |
| CN111285281B (en) * | 2020-02-27 | 2020-12-08 | 中国矿业大学 | Method for controlling brake sticking action consistency of multiple sets of brakes of mine hoist |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU787349A2 (en) | 1979-02-14 | 1980-12-15 | Всесоюзный Научно-Исследовательский Институт Горной Механики Им. М.М.Федорова | Hydraulic disc brake of mine hoist |
| DE3204695A1 (en) * | 1982-02-11 | 1983-08-18 | Siemens AG, 1000 Berlin und 8000 München | Device for the safety braking of hoists, in particular drum-type hoists |
| DE3604451A1 (en) * | 1986-02-13 | 1987-08-20 | Bosch Gmbh Robert | Hydraulic device for controlling the braking force at a brake disc |
| US5895099A (en) * | 1997-10-17 | 1999-04-20 | Deere & Company | Hydraulic structure for a brake system |
| US6179271B1 (en) * | 1998-06-26 | 2001-01-30 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Hydraulic winch having piston rod and pressure plate which are relatively movable in fixed range |
| DE10208370A1 (en) | 2002-02-27 | 2003-09-11 | Wirth Co Kg Masch Bohr | hoist |
| CN2656391Y (en) * | 2003-10-10 | 2004-11-17 | 淄博矿业集团有限责任公司许厂煤矿 | Hydraulic brake device for hoister |
| GB2428768B (en) * | 2005-07-29 | 2008-07-30 | Alcon Components Ltd | Brake fluid valve assembly |
| DE102006003832B4 (en) * | 2006-01-26 | 2008-10-16 | Bubenzer Bremsen Gerhard Bubenzer Ing. Gmbh | Control and regulating arrangement for securing a conveyor, conveyor and crane system |
| US8105008B2 (en) * | 2007-07-10 | 2012-01-31 | Raymond David Givens | Pneumatic multi-weight balancing device |
| DE102007041411B3 (en) * | 2007-08-31 | 2009-01-29 | Siemag M-Tec2 Gmbh | Hydraulic deceleration-controlled disc brake unit for e.g. hoist in mining, has directional valve arranged in connecting line, and programmable logic controllers controlling control valves lying diagonal to each other in hydraulic lines |
| DE102008024512B4 (en) * | 2008-05-21 | 2010-08-12 | Manitowoc Crane Group France Sas | Electrohydraulic leak compensation |
| DE102008056022B3 (en) * | 2008-11-05 | 2010-03-11 | Terex-Demag Gmbh | braking device |
| CN102701103B (en) * | 2012-06-09 | 2014-04-02 | 太原理工大学 | Safety brake and redundancy control system of mine hoist |
| WO2014021896A1 (en) * | 2012-08-02 | 2014-02-06 | Otis Elevator Company | Hydraulic brake system for elevator |
| DE102013108495B4 (en) * | 2013-08-07 | 2017-08-24 | Mhwirth Gmbh | Lift brake system |
-
2012
- 2012-09-27 NO NO12773277A patent/NO2760517T3/no unknown
-
2014
- 2014-01-30 DE DE102014101128.7A patent/DE102014101128B3/en active Active
-
2015
- 2015-01-19 EP EP15700693.3A patent/EP3099623B1/en active Active
- 2015-01-19 CA CA2936040A patent/CA2936040C/en active Active
- 2015-01-19 CN CN201580006425.6A patent/CN105939957B/en active Active
- 2015-01-19 US US15/115,267 patent/US9751735B2/en active Active
- 2015-01-19 WO PCT/EP2015/050868 patent/WO2015113847A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| US20170001845A1 (en) | 2017-01-05 |
| CA2936040C (en) | 2022-02-22 |
| NO2760517T3 (en) | 2017-12-30 |
| EP3099623B1 (en) | 2017-11-22 |
| DE102014101128B3 (en) | 2015-03-19 |
| CN105939957B (en) | 2018-10-16 |
| CN105939957A (en) | 2016-09-14 |
| EP3099623A1 (en) | 2016-12-07 |
| WO2015113847A1 (en) | 2015-08-06 |
| US9751735B2 (en) | 2017-09-05 |
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| Date | Code | Title | Description |
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| EEER | Examination request |
Effective date: 20191126 |